A total of 722 tickets were sold for the school play. they were either adult tickets or student tickets. there were 72 more stud
1 answer:
You might be interested in
Look at the pictures it explains the equation step by step tell me if you have any questions the answer is at the bottom
Answer:
SA = 108π cm²
Step-by-step explanation:
The surface area (SA) of a sphere is calculated as
SA = 4πr² ( r is the radius )
Thus the SA of a hemisphere is
SA = × 4πr² = 2πr²
The area of the circular base = πr²
Then total SA is
SA = 2πr² + πr² = 3πr² = 3π × 6² = 3π × 36 = 108π cm²
